diff --git a/apps/server/trpc/subscriptions.ts b/apps/server/trpc/subscriptions.ts
index 97cf38b..027e055 100644
--- a/apps/server/trpc/subscriptions.ts
+++ b/apps/server/trpc/subscriptions.ts
@@ -40,7 +40,6 @@ export const ALL_EVENT_TYPES: DomainEventType[] = [
   'agent:account_switched',
   'agent:deleted',
   'agent:waiting',
-  'agent:output',
   'task:queued',
   'task:dispatched',
   'task:completed',
@@ -84,7 +83,6 @@ export const AGENT_EVENT_TYPES: DomainEventType[] = [
   'agent:account_switched',
   'agent:deleted',
   'agent:waiting',
-  'agent:output',
 ];
 
 /**
diff --git a/docs/server-api.md b/docs/server-api.md
index 2b69321..f1faab4 100644
--- a/docs/server-api.md
+++ b/docs/server-api.md
@@ -204,13 +204,13 @@ Each procedure uses `require*Repository(ctx)` helpers that throw `TRPCError(INTE
 | Procedure | Type | Events |
 |-----------|------|--------|
 | onEvent | subscription | All event types |
-| onAgentUpdate | subscription | agent:* events (8 types) |
+| onAgentUpdate | subscription | agent:* events (7 types, excludes agent:output) |
 | onTaskUpdate | subscription | task:* + phase:* events (8 types) |
 | onPageUpdate | subscription | page:created/updated/deleted |
 | onPreviewUpdate | subscription | preview:building/ready/stopped/failed |
 | onConversationUpdate | subscription | conversation:created/answered |
 
-Subscriptions use `eventBusIterable()` — queue-based async generator, max 1000 events, 30s heartbeat.
+Subscriptions use `eventBusIterable()` — queue-based async generator, max 1000 events, 30s heartbeat. `agent:output` is excluded from all general subscriptions (it's high-frequency streaming data); use the dedicated `onAgentOutput` subscription instead.
 
 ## Coordination Module